Which set of ordered pairs does NOT represent a function? ((0, 0), (1, 1), (2, 2), (3, 3)}
{(0, 0), (0, 1), (1, 2), (1, 3)}
{(1, 0), (2, 0), (3, 0), (4, 0)}
{(0, 1), (1, 2), (2, 3), (3, 4)}

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32